Machine for casting sash-weights



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J. J. DUNN. MACHINE FOR GASTING SASH WEIGHT3- Patented Dec. 3, 1889.

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J.. J. DUNN; MACHINE FOR CASTING SASH WEIGHTS.

No. 416,450.- Patented Dec. 3, 1889.

N. PETERS. Phaln-Lilbcgmphur. Wilhinglun. D. C,

UNITED STATES PATENT OFFICE.

JOHN J. DUNN, OF JERSEY CITY, NEXV JERSEY.

MACHINE FOR CASTING SASH-WEIGHTS.

SPECIFICATION forming part of Letters Patent No. 416,450, dated December 3, 1889. Application filed June 14, 1889. Serial No. 314,275. (No model.)

To all whom it may concern.-

Be it known that I, JOHN J. DUNN, of J ersey City, in the county of Hudson and State of New Jersey, a citizen of the United States,

have invented certain new and useful Im provements in Machines for Casting SashlVeights, of which the following is a specification.

This invention relates to improvements in machines for casting sash-weights; and the object of my invention is to provide a machine of this kind by means of which the weights can' be cast very rapidly and the molds opened and closed automatically and the cast weights also charged automatically.

The invention consists in the combination, with a turn-table, of a series of hinged molds secured on the same and devices for automatically unlocking, opening, andclosing said molds.

The invention also consists in the construction and combination of parts and details, as will be fully described hereinafter, and finally be pointed out in the claims.

In the accompanying drawings, Figure 1. is a plan View of myimproved machine for easting sash-weights, the latches on some of the molds being omitted. Fig. 2 is aninner face View of one section of a molch Fig. 3 is a vertical transverse sectional view of myimproved machine, parts being broken out. Fig. i is a detail side view of one of the molds open, the locking device and the arm being omitted. Fig. 5 is a top view of one of the molds.

Similar letters of reference indicate corresponding parts.

The circular frame Ahas a series of downwardly-projecting brackets, in which rollers B are mounted, said rollers running on a circular track B. The circular frame A is mounted to turn around a central shaft C, and is provided with a circular rackD, engaging a pinion E, which is driven in any suitable manner by a suitable motor.

On the outer edge of the circular frame A a series of molds Fare secured, which are formed of two sections F and F Each section F is provided with lugs G, through which bolts are passed into the circular frame A, as shown in Fig. 4. Each section F is provided at its ends with upwardly-projecting curved arms H, to which the curved arms H of the sections F are hinged, the upper ends of the arms H and H being connected by powerful spiral springs J, which serve to hold the swinging section F against the fixed section Each section is provided with a series of vertical recesses K, into which the metal is cast.

K is the gutter into which the metal is poured, and K the overflow. r a

Each fixed section F is provided at the end with a lug L, and to each lug a latch -M is pivoted, provided at its front end with a beveled hook that can engage the swinging section F of the inold and lock the same in position against the fixed section F as shown in Fig. 4. The rear ends of the latches Mare connected by rods N with the opposite ends of a lever O, pivoted on a bracket P, projecting from the back of the fixed section, said lever 0 being provided on its rear end with an anti-friction roller 0. cured to the lever O at the outer end of the same and to an arm R on the bracket P.

Each swinging section F of each mold is provided on its outer side with a downwardlyprojecting arm Q, that can engage a fixed cam S, arranged a short distance below and slightly beyond the outer diameter of the circular frame A.

An additional cam-track T is fixed some distance below the circular frame and in such a position that the anti-friction rollers O of the levers O can run on the same.

The operation is as follows: The metal is A spring R is sepoured in any suitable manner into the closed molds, and the entire machine is rotated in the direction of the arrow w. hen the molds arrive at the cam-track T, said cam-track, acting on the rollers O, throws the rear ends of the levers O in the direction of the arrow 00 Fig. 5, whereby the inner ends of the latches M are drawn toward each other and the outer ends moved from each other, and the swinging sections F are thus unlocked, but are still held against the fixed section F by the action of the springs J. As longas the rollers 0 run on the cam-track T the latches M are kept in unlocked position, as shown in Fig. 1. The unlocked molds then arrive at the beveled end of the'cam-track S, which, acting on the arm Q, moves the same outward, whereby the swinging sections F of the mold are swung from the fixed sections F thus permitting the east weights, which are sulfieiently hardened by this time, to drop out of the molds. By the time that the arm Q of 5 a mold arrives at the end of the cam-track S the corresponding roller 0' also runs oil? the cam track T. The springs J, which are brought in tension by opening the molds, swing the sections F against the sections F and the springs R, which are brought in tension by the opening of the latches, swing the outer ends of said latches toward each other, thereby locking the closed molds. The molds cool during the time that the molds move from the place where the weights were discharged to the filling-place. The molds are thus opened, closed, locked, and unlocked automatically, and the cast weights are discharged automatically, and all the attendant need to do is to pour the cast metal into the molds.

Having thus described my invention, 1 claim as newand desire to secure by Letters Patent- 1. In a machine for casting sash-weights, the combination, with a horizontal rotating frame, of a series of sectional molds on the same, latches for lockiu g the swinging sections of the mold to the fixed sections, a camtrack arranged below the rotary frame and adapted to act on the latches to disengage the same and thereby unlock the hinged sections of the mold from the fixed sections, projections on the hinged sections of the molds, and a camtraek adapted to act on said sections and swing the hinged sections from the fixed sections of the mold, substantially as set forth.

2. In a machine for casting sash-weights, the combination, with a rotary frame, of a series of mold-sections fixed on the same, swinging mold'sect-ions hinged to the fixed sections, springs for pressing the hinged sections against the fixed sections, and latches for locking the hinged sections to the fixed sections, substantially as set forth.

3. In a machine for casting sash-weights, the combination, with a series of fixed moldsections on the same, of mold-sections hinged to the fixed sections, springs for pressing the hinged sections against the fixed sections, an arm on each hinged section, and a fixed earn adapted to act on said arms and thereby swing the hinged sections from the fixed sections, substantially as set forth.

at. In a machine for casting sash-weights, the combination, with a rotary frame, of a series of fixed mold-sections on the same, a swinging mold-section hinged to each fixed 1nold-section, two latches pivoted on brackets of each fixed section, a lever with which said latches are connected, and a fixed cam adapted to act on said lever and disengage the latches from the hinged sections, substantially as set forth.

In testimony that I claim the foregoing as my invention I have signed my name in presence of two subscribing witnesses.

JOHN J. DUNN.

\Vitnesses:

Osonn F. GUNz, W. REIMHERR. 

